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About Us
Doly Well Trading (Shanghai) Co., Ltd has been concentrated on Dopak sampling systems for more than 10 years. Our customer included petrochemical, chemical, natural gas, bio-pharmaceutical and semiconductor Industries. We have Dopak’s full support and will supply the closed loop sampling systems which has the most innovative and expert to the customer.

In order to meet all requisitions for the customer, we are able to submit the design and proposal to the customer for the different projects. Whether you choose a standard product or a customized system, you can be sure Dopak samplers will meet the most stringent environmental, health and safety standards.

Wherever you are, to satisfy your demand will be our most attentive goal.
Liquid Sampling Systems
Gas and Liquefied Gas Sampling Systems
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